Requiem for a dealer

It's Brodie Farrell's night off, and she's taken her friend Daniel Hood for some driving practice, when an encounter with an hysterical girl leaves them both shaken. The accident is undoubtedly the girl's fault, so why is she adamant that Daniel tried to kill her? Brodie turns to Detective Superintendent Jack Deacon, who is trying to find the source of a new drug which is flooding the streets of Dimmock. Then the girl, Alison Barker, turns up in hospital not as an RTA victim but suffering from a drug overdose, claiming her father was murdered and that she'll be next ...